added api

backend/app/homelab/notices.py

@@ -0,0 +1,21 @@
+from sqlalchemy import select
+
+from app.db.base import SessionLocal
+from app.db.models import ChatSession, Message
+
+
+def post_chat_notice(content: str) -> None:
+    db = SessionLocal()
+    try:
+        session = db.scalar(
+            select(ChatSession).order_by(ChatSession.updated_at.desc()).limit(1)
+        )
+        if not session:
+            session = ChatSession(title="Уведомления")
+            db.add(session)
+            db.commit()
+            db.refresh(session)
+        db.add(Message(session_id=session.id, role="notice", content=content))
+        db.commit()
+    finally:
+        db.close()